David Skarbek of King's College London and author of The Social Order of the Underworld: How Prison Gangs Govern the American Penal System talks with EconTalk host Russ Roberts about the written and unwritten rules in America's prisons for the most violent and dangerous criminals. Skarbek explains how and why prison gangs emerged in the last half of the 20th century, their influence both inside and outside of prisons, and how their governance structure is maintained.

Campbell Harvey of Duke University talks with EconTalk host Russ Roberts about his research evaluating various investment and trading strategies and the challenge of measuring their effectiveness. Topics discussed include skill vs. luck, self-deception, the measures of statistical significance, skewness in investment returns, and the potential of big data.

Paul Romer of New York University talks with EconTalk host Russ Roberts about reforming cities to allow growth and human flourishing. Topics discussed include charter cities, the role of population density in city life, driverless cars, and various ways to help the poorest people in the world.

This week's episode was recorded before a live audience at the Cato Institute and featured GMU economist Lawrence White. The focus of the conversation was a new book edited by White offering suggestions for reform of the U.S. monetary system. As always, we'd like to hear your responses. Please help us continue our conversation in the comments.

Lawrence H. White of George Mason University talks with EconTalk host Russ Roberts about the possibility of a monetary constitution. Based on a new book, Renewing the Search for a Monetary Constitution, White explores different constitutional constraints that might be put on the government's role in money and monetary policy. Topics discussed include cryptocurrencies, the gold standard, the Taylor Rule, the performance of the Fed, free banking, and private currency.

David Zetland of Leiden University College in the Netherlands and author of Living with Water Scarcity talks with EconTalk host Russ Roberts about the challenges of water management. Issues covered include the sustainability of water supplies, the affordability of water for the poor, the incentives water companies face, and the management of water systems in the poorest countries. Also discussed are the diamond and water paradox, campaigns to reduce water usage, and the role of prices in managing a water system.

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Music from Cleared up Sunset, by Yasuhiro Tsuchiya / unplug
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